The Community is hosting an End of Summer sweepstakes! Participants must complete tasks to earn tickets that will enter them with a chance to win a free year of Constant Contact and other great prizes!*
*No Purchase Necessary. For Official Rules, visit here. Constant Contact’s End of Summer 2020 Sweepstakes ends on October, 20, 2020 at 11:50 PM EST.
Sorry to hear you are experiencing this issue. After taking a closer look, Facebook tells us that Error code 368 translates to " Warning: This Message Contains Blocked Content: Some content in this message has been reported as abusive by Facebook users."
This appears to indicate that Facebook is deeming the content to be spam, either due to the content within the post or the amount of times it has attempted to be posted within a short period.